Chart for tuning radio sets



May .2 19,2 1,495,843

' I C. F. HANSELMANN CHART FOR TUNING RADIO SETS Filed Sept. 26, 1923 STATION PRIMARY CONDENSER VARlO-COUPLER WITNESSES IN I/E/V TOR 1 GFILLZNSELMHNN 06%; ZZJIWQ l1 TTOR/VEYS ill? Fstentcd lids 2?, recs;

err s ress CHARLES E. HANSE-L'MANN, GE BEGQKLYN NEW YORK.

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CHART FOR TUNING RADIO Application filed September 26, 1923. Serial No. 685,031.

' To all whom it moy emcem:

exact description.

This invention relates to improvements in recording devices, and has particular reiei ence to a chart for tuning redio sets.

An object of the invention is to facilitate the repeated tuning of the various instru rnents of e radio set for any particular station by providing a chart in which a plurality of indicating devices, each corresponding to a different tuning instrument of said set, are operated to record the positions of the dials or switches associated with said instruments when the latter are tuned to a definite Wave length individual to said station.

The above and other objects will appear: more clearly from the following detaildescription when taken in connection with the accompanying drawing, which illustrates preferred embodiments of the inventive idea.

In the drawing Fi 'ure 1 is a fragmentary plan view' of the chart constructed in accordance with the ingention;

- i re 2 is a throgh";

Figure 3 is a fragmentary plan View. of a sli htly difi'erent form of the invention and Figure l is a, fragmentary plan view of still another form of the invention.

Referring particularly to Figures 1 and 2, the chart is shown as comprising a base or body portion 4:, which may be. made otany longitudinal section there suitable material and the face of which is with a plurality of horizontal lines 5 arranged in parallel relation to divide the chart into a plurality of rows. Other vertical lines 6 intersecting the lines 5 divide the provided chart into vertical columns and combine "with the lines 5 to divide the chart into a plurality of rectangular spaces for purposes which will presently appear. in the space 7 at the top of the column shown at the extreme left end of the chart, the Word Stations or any other desirable designation is inserted and in the remainin spaces in Sfi-lCl'EOlllHlIl the station letters in ividuel to various broadcasting stations are inserted each of the latter spaces and the station letters therein being individual to the row in which said space is located. The spaces at the top of the other columns contain indicie designating the various tuning instruments forming a part of the radio set, such primary end secondary coils, condenser, vario-coupler end'other instrument's. F or each of the instruinents of the set there is provided in each. row a dial 8 having gradustions thereon similar to the grsdnations.

on the dial sssocisted with the corresponding instrument voi the set. Each dial is i formed of any suitable material and is 1'0- tetably mounted on s, rivet 9 or-othersi nilar device, which is extended through the dial and the based, as clearly shownin Figure 2. Associated with each dial and marked in the spacesvin which said dial is located is an indicator 10 arranged adjacent the periphery of the dial.

After the operator of the radio set has initially tuned the instruments of a set to the proper wave length orsirequencyhfor any perticul ar" or-oadcasting station, thevarious d'als the chart individual to said station may be rotated and set in accordance-with. the settings of the corresponding dials of th rsdio set, thereby establishing a permanent record, which will enable the operator-to quickly adjust the instruments of the set when it is subsequently desired to tune in on any particular station- In the form of the invention shown in Figure 3 the base 4 is again divided into" 7 columns and rows with the spaces in the left-hand column having the usual station designations. instead of the dials 8, how-' ever, the spaces of the remaining columns contain representations 11 oi what s generally known as tap switches used in conjunction with certain instruments of a radio set.

Associated with each of the representations 11 is a rotatably mounted pointer or indicator 12, which may be adjusted to a position siniilar to the rotatable contact meinber of a tap switch for apurpose which will now be apparent. I

"In the form of the invention shown in l igure t each of the spaces of the chart-may have printed or otherwise indicated thereon a representstion of a dial 13, similar to-the dials 8, which dials 13' may be marked with a pencil or an itch line 14: by the'user of the chart as a perinenent record for-indicating roe the position to which the corresponding dial of the radio set must be adjusted for any particular station. What is claimed is: a

1. As a new article of manufacture, a chart for tuning radio sets, including a base having on one surface thereof a plurality of intersectinglines dividing said surface into spaces forming a plurality of columns and rows, the spaces in one of said columns containing station designations, and a recording device corresponding to one tuning instrument of the radio set in each of the spaces in the row opposite each of the station designations and capable of being adjusted to provide a permanent record for tuning the corresponding tuning instrument, the recording devices in each row being individual to the, station designation in said row.

2. As a new article of manufacture, a

chart for tuning radio sets, including a pin- -a plurality of recording devices in each colraeaeas rality of station designations, and a plurality of recording devices individual to each of said station designationsiand each of said recording devices corresponding to one of the tuning instruments of the radio set and capable as adjustment to providea ing tuning instrument. t

3. As a new article of manufacture, a chart for tuning radio sets, including a base-di-' vided into columns and rows, one of, said columns containing station designations, and

noon and row, the recording 'de'vicesin one row being individual to. one of said station designations, and the recording devices in each column being individual to one of thetuning instruments of the radio set, said recording devicesy'being capablefof adjustment v to provide a permanent record for tunin the instruments to which they are individual GHARLES F. HANSELMANN."

25 permanent record for tuning the correspond- 

